StarCatStudent StarCatStudent

02-10-2018
Mathematics

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Rt. 78 is approximately 8.9 x 10^3 times longer than Rt. 54. Rt. 54 is 4.5 x 10^3 miles long. How long is Rt. 78? Write your answer in scientific notation.

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allyscle allyscle

08-10-2018

Rt. 78 is 4.005 x 10^7.

Rt. 54 is 4,500 mi. long,

Rt. 78 is 8,900 times longer,

4,500 x 8,900 = 40,050,000 = 4.005 x 10^7

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